Announcing Web Serial Support in Firefox
Mozilla announced Web Serial support in Firefox, shipping in version 128. The Web Serial API allows websites to read from and write to serial ports, connecting to devices such as Arduino boards, GPS receivers, and barcode scanners. This feature, already available in Chrome and Edge, fills a gap for cross-platform hardware interaction. Developers can now create progressive web apps that interact with serial devices directly from the browser, simplifying workflows for IoT prototyping, firmware flashing, and industrial automation. The implementation follows the W3C Web Serial specification and requires user permission for each device connection. Firefox's addition means broader support for the API, reducing reliance on Chrome-specific solutions.
Firefox now supports Web Serial, enabling cross-browser hardware interaction without native apps.